1S80.] 2() 



Dipt. Suec. Muscicl, 52, 83 ; AVicdcmann, Zool. Mag. (1817), i, 183 ; 

 ? Meigeii, System. Besch., v, 73 ; Zetterstedt, Insect. Lappon , G60 ; 

 AValkcr, Insect. Brit., ii, 113. Cijrtoneura hortornv), Zetterstedt, Dipt. 

 Scand., iv, 1346 ; Loew, Wien. ent. Mon., i, 40 ; Schiner, Faun. Austr., 

 1, 59G. C. pilipes, Eoiidam', Dipt. Ital., v, 215. Morellia importidia, 

 Haliday, Ent. Mag., iv, 119. M. Jiortorum, Haliday, Ann. Nat. Hist., 

 ii, 185. M. agilis ?, R. Desv., Myod., 405. AJinn arjUis, R. Deav., 

 Dipt, envir. de Paris, ii, 639. 



Colour and pattern the same as in M. simplex, but the abdomen has more fre- 

 quently a green tinge : head — eyes of J parted by a black space, which occupies 

 about one-eighth of the width of the head, and is about twice as wide as the interval 

 between the eyes of M. simplex ; the space between the eyes of ? measures one- 

 third of the width of the head, characters of the other parts of the head similar to 

 those of 31. simplex : thorax and abdomen marked as in 31. simplex : legs with fore 

 femora ciliated beneath with long stiff hairs, in addition to which (in the <J ) they 

 are thickly bearded on the outer and under sides with soft hairs ; fore tibife of ^ 

 with a few long stiff spines on their outer surfaces near the middle and at the ex- 

 tremities, and with their inner sides clothed along the whole length with thick, soft, 

 and rather short hairs ; middle femora ai'med in S with a tuft of short but stifP 

 bristles near the tip ; middle tibiffi with a series of short erect little spines, placed 

 irregularly along the upper half of the outer surface, and having the lower half of the 

 same surface fringed with soft short hairs, as in 3f. simplex ; hind femora with only 

 a few long hairs on their under surfaces near the ends ; hind tibise slightly but dis- 

 tinctly curved inwards at their lower thirds, they have a thick row of short stiff 

 bristles along their outer sides, and only a few short soft hairs on their inner and 

 under surfaces ; hind tarsi as in 31. simplex : alulets dirty white, lower scale in ^ 

 having a brown tinge in the form of a ring, near the margin, the edge itself being 

 fringed with pale yellow : wings clouded near the base with brown, which colour is 

 conspicuous in the small basal cells : third longitudinal vein armed with six or seven 

 small spines, which are arranged along the vein at nearly equal distances, and extend 

 from the base to near the small cross vein in o an<i ? • 



This speci(-s is rather larger than the former, and rery common ; 

 the males may at once be distinguished from those o£ the preceding 

 species by the tuft on the apex of the middle femora, by the wider 

 space between the eyes, and by the anterior tibia* being hairy on their 

 inner sides instead of the posterior ones, as in J/, simples; also by the 

 spines on the Avings. The females of the two species (which authors 

 have failed to discriminate) may most readily be known from each 

 other by the difference in width between the eyes, by the hind tibia? 

 in M. siviphw being clothed beneath with a few long hairs (which are 

 absent in 31. hortorum), and by the different armature of the third 

 longitudinal veins of the wings. 



3. rODAGRiCA, Lw. (J . Nif/7-o-chaJ}/bca nitida, lineatn ct irrorata 



